OA-4

Space station cargo resupply missions from U.S. soil resumed today with the successful return to flight of Orbital ATK’s Cygnus spacecraft on the OA-4 mission. Delayed three days due to inclement weather at Cape Canaveral, Cygnus blasted off atop a United Launch Alliance Atlas V rocket at 4:44 p.m. EST from Space Launch Complex 41,

Orbital ATK is on track to launch its next CRS mission late this year and is moving forward with integration of a new first stage propulsion system into the Antares launch vehicle in preparation for multiple CRS...